This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A342687 #19 May 10 2024 08:52:03 %S A342687 13124675,28055699,50043937,52679923,53069024,55097976,57936559, %T A342687 60484744,62260463,62445305,70211956,73133026,79401728,80368962, %U A342687 84766210,88512249,93288865,98824300,106993391,113055482,117173891,120968132,123383875,126416258,131106051,131529588,132022925 %N A342687 Numbers that are the sum of five fifth powers in three or more ways. %H A342687 David Consiglio, Jr., <a href="/A342687/b342687.txt">Table of n, a(n) for n = 1..1000</a> %o A342687 (Python) %o A342687 from itertools import combinations_with_replacement as cwr %o A342687 from collections import defaultdict %o A342687 keep = defaultdict(lambda: 0) %o A342687 power_terms = [x**5 for x in range(1, 500)] %o A342687 for pos in cwr(power_terms, 5): %o A342687 tot = sum(pos) %o A342687 keep[tot] += 1 %o A342687 rets = sorted([k for k, v in keep.items() if v >= 3]) %o A342687 for x in range(len(rets)): %o A342687 print(rets[x]) %Y A342687 Cf. A342685, A342688, A344243, A344518, A345337, A345604. %K A342687 nonn %O A342687 1,1 %A A342687 _David Consiglio, Jr._, May 18 2021